libevent is used at run time in 199 crates. It is a direct run-time dependency in 7 crates.

Depender (with downloads and own rev deps) libevent version
350 197 bitcoin-imports ^0.1.0
320 23 bitcoin-support ^0.1.0
3 bitcoin-http ^0.1.0
3 bitcoin-test ^0.1.0
2 bitcoin-tor ^0.1.0
2 bitcoin-cli ^0.1.0
1 bitcoin-fuzz ^0.1.0